Leather-working machine.



F. H. TEEL.

LEATHER WORKING MACHINE.

APPLICATION FILED JULY 21, 1913.

Patented Mar. 24, 191i ,IPIVEHTQ 077M 544 M 2% OFFICE.

FRANK H. TEEL, 0F SALEM, MASSACHUSETTS.

LEATHER-WORKING MACHINE.

To all whom it may concern Be it known that I, FRANK H. TEEL, a citizen of the United States, residing in Salem, in the county of Essex and State of Massachusetts, have invented an Improvement in Leather-VVorking Machines,. of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to leather working machines of that class in which the hide, skin or leather is supported by a bed roll while it is being acted upon by a bladed cylinder.

Machines of the character described are employed among other uses for putting out or stretching tanned hides or skins in the wet state, to obtain a surface area as large as possible without injuring the hide or skin, as the latter are sold by the surface measurement, but such machines have not been as efiicient as desired, for the reason, that the hides or skins are not put out or stretched to the maximum and further do not retain the stretch, but on the other hand contract from which is made from a piece of leather, which has its abutting ends cemented together, so as to form a smooth and practically seamless sleeve, which will not mark the hides or skins.

The leather sleeve absorbs moisture from the wet skin, and when moist, affords better adhesion of the wet skin under the pressure of the bladed cylinder, with the result that the hide or skin put out or stretched retains its stretch permanently and thereby in creases the surface area of the hide or skin to the maximum, consequently increasing the Specification of Letters Patent.

Application filed July 21, 1913.

Patented Mar. 24, 1914. Serial No. 780,095.

and when skins having a coarse grain, such as goat skins, are treated, the grain is laid down better and a superior product is obta ned, while at the same time tearing of the skin or cracking of the grain thereof by the bladed cylinder, is avoided by the leather sleeve turning on the roll before the drag on the skin becomes sufficiently severe to crack or tear the latter.

Figure l is an elevation of one construction of putting-out machine provided with a work-supporting roll embodying this invention. Fig. 2, a side elevation of the machine shown in Fig. '1 looking toward the left, and Fig. 3, a section of the work-supporting roll.

Referring to the drawings, a represents a work-supporting roll of rubber, felt or other yielding material, which roll constitutes the bed roll in the machine herein shown, and b is a leather sleeve loose thereon, and which is preferably formed by overlapping its beveled ends and cementing them together, as indicated by the line 0 in Fig. 3, so as to form a practically seamless leather sleeve capable of being turned on the roll a and having a smooth circumference, which will not mark the hide or skin put-out or stretched in the machine in which the bed roll is used.

In the present instance, I have shown the bed roll as used in a power-operated machine of known construction, and inasmuch as I do not claim as my invention the particular construction shown, a brief description of the same will suflice to enable the action of the leather covered roll to be understood.

In the machine herein shown, the leather covered bed roll is mounted in swing arms 10, located at opposite sides of the machine and each connected by a toggle 12, 13, and link 14: with a crank 15 on a shaft 16, which is rotated intermittently from a main shaft 17 by a pinion 18 and gear 19. The rotation of the crank shaft 16 is controlled by a clutch member 20 on the main shaft, which cooperates with a clutch member (not shown) but fast to the pinion 18, and the clutch member 20 is operated by a foot treadle 22 on a rock-shaft 23, connected by gears 24, 25, with a rock-shaft 26 having an arm 27, which actuates the clutch member 20. The shaft 23 has an arm 28 provided with a dog or projection 29, which is adapted to enter diametrically opposite slots 30 in adisk 31 attached to the shaft 16. The

dog 29 is normally held in one of the slots 30 by a spring 32 connected with the arm 28.

On one half revolution of the crank-shaft 16, the toggle 12, 13, is straightened, and the bed roll is moved from its inoperative or open position, shown in Fig. 2, into its operative or closed position, in which latter, the bed roll cooperates with a bladed cylinder 33, which acts to put out or stretch the hide or skin interposed between the bladed roll and the bed roll and yieldingly backed-up by the latter. The bladed cylinder 33 is designed to be driven rapidly and is provided with the driving pulley 34.

The bed roll in its operative position cooperates with a feed roll 35 of known construction, which is driven from the main shaft 17 by the sprocket wheel 36, link chain 37 and sprocket wheel 38, and the feed roll 35 drives the bed roll by the gears 40, 41, the gear 41 on the bed roll being brought into mesh with the gear e0 on the shaft of the feed roll 35, when the bed roll is moved into its operative position.

The hide or skin to be put-out or stretched, is in a wet condition, and is placed over the bed roll when the latter is in its inoperative position shown in Fig. 2. When the bed roll is moved into its operative position, the bed roll cooperates with the feed roll 35 to feed the skin out of the machine and also 00- operates with the bladed cylinder to back-up the hide or skin, while it is being put-out by the bladed cylinder.

Owing to the fact that the bed roll is provided with the leather sleeve 5 capable ofbeing turned thereon, the hide or skin is more effectively put out or stretched without danger of cracking or tearing the hide orskin, and the stretch is permanent, so that a larger surface area is obtained and at the same time, the grain of coarse-grained skins, such as goat skins, is laid down and a superior grain side or surface imparted to the skin, and thus two important results are obtained by the cooperation of the yielding bed roll having the loose leather sleeve with the bladed cylinder. By making the sleeve with its beveled ends overlapped and cemented together, the sleeve is practically seamless and smooth on its outer surface and the danger of marking the skins is thus avoided.

It is preferred to have the leather sleeve envelop the rubber, felt or other yielding roll tightly or snugly, so that, the leather sleeve will olier a greater resistance or holdback on the hide or skin under the action of the bladed cylinder, and thereby increase the stretch or putting-out effect on the skin, yet is capable of turning on the bed roll it the action or drag of the bladed cylinder on the hide or skin is sufiiciently severe, and thereby avoid cracking of the grain and tearing of the skin.

It will be understood, that the yielding roll with the leather sleeve thereon may be used in any other construction of puttingoutmachine, in which it cooperates with a bladed cylinder.

Claims:

1. A roll of the character described for hide and leather working machines, comprising a roll of yielding material, and a sleeve of leather enveloping said yielding roll and capable of being turned thereon, substantially as described.

2. A roll of the character described for hide and leather working machines, comprising a roll of yielding material, and a sleeve of leather enveloping said yielding roll and capable of being turned thereon and having its ends beveled and overlapped and cemented together, for the purpose specified. In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK H. TEEL.

W'itnesses J AS. H. CHURCHILL, J. MURPHY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Estonia, Washington, D. G. 

